The vSphere VMware ESXi hypervisor has been adjusted to provide high I/O throughput in an efficient way, using less CPU cycles and maintaining power, since it is required by so many workloads.
Telco and NFV application workloads are different from typical Tier I enterprise application workloads. In fact, they tend to be sensitive to latency, instability and often have a high packages rate and high bandwidth.
vSphere ESXi can be tuned specifically for those workloads in order to achieve better performance with NFV.
Bhavesh Davda, Office of CTO of VMware, explains in this whitepaper how to tune this hypervisor, hardware and NFV applications to achieve best performance in ESXi.
Source: VMware blogs